Calum Stewart is SPEE3D’s leading expert on military logistics and expeditionary manufacturing. Formerly a military logistician, Calum was a Chartered Engineering Officer in both the British and Australian Armies and was the world’s first military logistic officer to deploy cold-spray metal additive technology into the expeditionary environment. In recent years, Calum has taken SPEE3D’s technology on deployments with the Australian Navy, Australian Army, the British Army, the US Army and most recently with the Ukrainian Army.